| Appel 438 O-14-8145 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 3 | 352K | 3.77M | Apr 2010 – Aug 2026 |
| Cooper 358 O-14-7764 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 4 | 278K | 3.03M | May 2007 – Aug 2026 |
| Barton 346 O-14-7762 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 4 | 250K | 1.39M | Jan 2007 – Aug 2026 |
| Cooper 445 O-14-7900 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 4 | 242K | 2.38M | Jun 2008 – Aug 2026 |
| Cooper 436 O-14-7515 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 4 | 222K | 2.46M | Apr 2004 – Aug 2026 |
| CNB Trustees 360 O-14-7490 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 4 | 210K | 2.22M | Jan 2004 – Aug 2026 |
| Cooper 435 O-14-7883 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 4 | 196K | 2.15M | Jul 2008 – Apr 2020 |
| Rader 251 O-14-8690 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 3 | 184K | 2.65M | Aug 2012 – Aug 2026 |
| Cooper 357 O-14-7840 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 2 | 177K | 1.43M | Feb 2008 – Aug 2026 |
| Hill 433 O-14-8146 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 4 | 169K | 1.66M | Apr 2010 – Aug 2026 |
| Braum 709 O-14-8510 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 2 | 155K | 2.17M | Feb 2012 – Aug 2026 |
| Waters Ranch 330 O-14-8459 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 2 | 152K | 1.79M | Sep 2011 – Aug 2026 |
| CNB "G" 345 O-14-7678 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 3 | 144K | 939K | Jul 2006 – Aug 2026 |
| Cooper 348 O-14-7627 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 4 | 142K | 864K | Jan 2006 – Aug 2026 |
| Doyle 708 O-14-8475 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 2 | 133K | 1.63M | Nov 2011 – Aug 2026 |
| Trosper 362 O-14-8508 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 2 | 126K | 1.49M | Apr 2012 – Aug 2026 |
| Jones Trust 359 O-14-7842 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 3 | 114K | 901K | Feb 2008 – Feb 2020 |
| Devin 187 O-14-8604 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 109K | 799K | Jan 2012 – Aug 2026 |
| Doyle, J.B. G-14-266422 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 85.8K | 974K | Dec 2011 – Jul 2021 |
| Price, Willis D. G-14-267668 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 85K | 719K | Apr 2012 – Aug 2026 |
| Tyson 447 O-14-8542 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 2 | 82.4K | 1.39M | May 2012 – Aug 2026 |
| Doyle, J.B. O-14-5816 | Highmark Energy Operating, LLC | Lipscomb, E. (Des Moines) | Lipscomb | 3 | 80.3K | 694K | by Jan 1993 – Jul 2020 |
| Doyle, J.B. G-14-266375 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 75.6K | 1.24M | Jun 2011 – Aug 2026 |
| Weidner 798 O-14-9140 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 2 | 67.9K | 815K | May 2011 – Aug 2026 |
| Doyle, Robert B. G-14-266559 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 59.8K | 644K | Sep 2010 – Apr 2023 |
| Reba N Miller G-14-282340 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 59.5K | 875K | Mar 2017 – Aug 2026 |
| Doyle, Robert B G-14-278802 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 59K | 600K | Feb 2015 – Aug 2026 |
| Trosper, Corwin 431 O-14-7609 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 2 | 58.4K | 655K | Aug 2005 – Aug 2026 |
| Doyle, Robert B G-14-266469 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 55.4K | 358K | Sep 2011 – Jul 2026 |
| Price, Willis D. G-14-265459 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 54.8K | 646K | Jan 2011 – Nov 2017 |
| Doyle, Robert 'B' G-14-279623 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 52.8K | 788K | Feb 2015 – Aug 2026 |
| Doyle, Robert B G-14-267105 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 49.1K | 118K | Apr 2011 – Sep 2019 |
| Burrus 187 O-14-8478 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 48.4K | 248K | Aug 2011 – Oct 2024 |
| Doyle, Robert B G-14-278576 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 45.8K | 497K | Feb 2015 – Aug 2026 |
| Harry Parker 697 G-14-281852 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 43.6K | 598K | Nov 2016 – Aug 2026 |
| Born 332 O-14-8462 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 42.2K | 1.09M | Oct 2011 – Aug 2026 |
| Reba N Miller G-14-282298 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 40.2K | 684K | Mar 2017 – Aug 2026 |
| Harry Parker 697 G-14-281831 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 38.6K | 1.33M | Nov 2016 – Aug 2026 |
| Tyson, D. R. G-14-247369 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 37.2K | 719K | Dec 2008 – Aug 2026 |
| Price, Willis D. G-14-266379 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 37K | 260K | Nov 2011 – Jul 2026 |
| Doyle, J.B. G-14-267714 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 36.9K | 910K | Sep 2012 – Aug 2026 |
| Burrus 186 O-14-8469 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 35.4K | 94.2K | Dec 2011 – Jun 2025 |
| Doyle, J.B. G-14-209619 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 34.5K | 843K | Jan 2005 – Aug 2026 |
| Reba N Miller G-14-266393 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 32.2K | 367K | Jun 2011 – Aug 2026 |
| Doyle, J.B. G-14-266374 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 31K | 282K | Jun 2011 – Aug 2015 |
| Price, WD -B- G-14-258033 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 29K | 690K | Feb 2010 – Aug 2026 |
| Doyle, Robert B G-14-266454 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 28K | 403K | Jul 2011 – Jan 2016 |
| Doyle, J.B. G-14-206731 | Highmark Energy Operating, LLC | Lipscomb (Morrow) | Lipscomb | 1 | 27.4K | 2.21M | Sep 2004 – Aug 2026 |
| Price, Willis D. G-14-266376 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 26.6K | 407K | Jul 2011 – Jun 2024 |
| Tyson, D.R. G-14-265818 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 26.3K | 506K | Apr 2011 – Aug 2026 |